Motor & transmissionLithium in the trunkUnder the hood
OwnerGreg Shay
LocationMentor, Ohio US map
Email email image
Vehicle1977 MG Midget
'Third life' of this car, was
restored at some point in the
past. I bought it with no
engine.
MotorNetgain Warp 8 Series Wound DC
(This is the *new* motor)
Whoops! Cooked my Agni 95 until it was 'well
done'. The 9HP continuous rating was not
enough for a hot day, 35mph long drag uphill.
DrivetrainOriginal 4 speed gearbox.
Drove initially with direct
coupled to driveshaft, but
ended up putting transmission
back in.
ControllerKelly KDZ400
400A DC controller. (Bought and
waiting to install a 550A sepex
controller with regen).
BatteriesCrown 5x 31DC130 + 2x Chevy Volt LiMnO2, 12.00 Volt, Lead-Acid, Flooded
The Lead-Acid 60V pack is in
parallel with the 72V Li-Ion
packs using a 400A diode to
keep the Li-Ion from back
charging the lead acid.
They both charge together up to
72V. The Li-Ion discharges
first 72V down to 64V, then
both batteries together down to
the bottom at 55V.
System Voltage72 Volts
ChargerJingcheng Jinan E-Shine Electronics Co 60V15A
Jinan E-Shine Electronics Co
Heaternone (yet)
DC/DC Converter
none so far.
Instrumentation120V 500A unit has been working well:
Ebay: "DC 120V 500A Volt Amp Combo Meter
Battery Charge Discharge Indicator Camper
CAR"

Desire is to enable classic gauges (fuel from
battery state of charge, etc..)
Top Speed55 MPH (88 KPH)
55 mph, new motor yeah! This
car is flying at 55mph..!
At 45mph, pulling 275 amps. Got better with the upgraded Li-ion
batteries.
AccelerationGreat acceleration with the Warp 8. Don't
have
to downshift from 4th gear going uphill with
2
people.
Range35 Miles (56 Kilometers)
Getting much better. The Lead acid was 1/3
of
what I was expecting and I traced it to the
130Ah batteries only delivering in the
cool/cold about 45aH (with battery load
tests.)
This is the reason I added 2 Chevy Volt
LiMn2O4 packs.
Watt Hours/Mile230 Wh/Mile
Or stated the other way, 3.25
mi/kWH which seems to be in the
range of typical EV's.
EV Miles
Start:53,123 Miles (85,474 Kilometers)
Current:54,630 Miles (87,899 Kilometers)
Total:1,507 Miles (2,424 Kilometers)
Seating Capacity2 adults
Curb Weight1,550 Pounds (704 Kilograms)
Close to original gross wgt
Tires13 inch standard. Looking for low rolling
resistance, but don't seem to be made in this
size.
Conversion Time5 years
Conversion Cost$800 donor car + $500 batteries + $350
controller + $200 charger + $300 misc + $1100
(Two 72V Volt packs) + $1000 motor= $4250.
Additional FeaturesPanning to upgrade headlights and tail/flashers to LED's to cut
current draw.

code by jerry